Basic Travis-CI configuration

Lint & build only.

Having trouble getting karma to launch w/ a captured browser.
'jake karma launchkarmabrowsers=...'

When karma starts, it will automatically launch and capture the listed browsers. Requires an installed launch, in addition to the browser itself.

See https://karma-runner.github.io/0.12/config/browsers.html for a list.
Run tests on Firefox in Travis-CI
Merge branch 'travis-basic' of https://github.com/JayBazuzi/quixote into dev
Better separation of concerns between Karma runner and build
Can run Karma in CI mode without running 'jake start'
Travis CI uses new one-step build